WTBX (93.9 FM) is a U.S. radio station in Hibbing, Minnesota, serving the Iron Range region. The station is owned by Midwest Communications and airs a hybrid format of Hot AC and Modern AC. In 2008 the station began leaning Adult Top 40 during the evening hours with the addition of tracks topping CHR charts, similar to KBMX in Duluth, MN. Formerly WTBX was CHR during the 1980s and had a relay transmitter on 97.7 FM in Duluth, MN.
Midwest also owns six radio stations on the Iron Range; KMFG, WMFG, WMFG-FM, WNMT, WTBX, WUSZ. All six stations share the same studio location at 807 W. 37th Street, Hibbing.